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wolverine [178]
3 years ago
11

The graph below displays the cost of notebooks. How many notebooks can you purchase for $108.00?

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

80 Notebooks

HOPE THIS HELPS

-Todo <3

Step-by-step explanation:

9/4=2.25

180/2.25=80

Harrizon [31]3 years ago
4 0

Answer:

48

Step-by-step explanation:

for this we need to figure out the rate of change and the price for one notebook, we can take any point on the graph like 12 notebooks for $27

first divide the price by the amount of books

27 / 12 = 2.25

and BOOM step one is done, we now know the cost for one notebook, not to find out how many notebooks $108.00 will give you, we will divide again, this time we divide the goal cost by the unit cost

108.00 / 2.25 = 48

and that is the amount of notebooks that $108.00 will get ya, please comment if you have questions about the process or how it can be used in similar situations

take care mah m8s :D

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Find the value of x.
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Answer:

X = 9

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4 0
3 years ago
The local branch of the Internal Revenue Service spent an average of 21 minutes helping each of 10 people prepare their tax retu
AURORKA [14]

Answer:

The confidence Interval is [- 0.7053  10.4521]

a: The  hypotheses  are

H0: μ1=μ2    against the claim Ha :μ1≠μ2

b. The critical value for t∝/2 for 17 d.f  t > 2.508 and  t < -2.111

c. t= -2.8422

d. The calculated value of t= -2.8422 is less than t < -2.11 the critical value therefore we reject H0 and conclude there is a difference between the two means.

Step-by-step explanation:

When the standard deviations are not the same then the confidence intervals for mean differences are calculated as

(x1`-x2`)- t∝/2 √s1²/n1 + s2²/n2 < u1-u2 < (x1`-x2`)+ t∝/2 √s1²/n1 + s2²/n2

x1`= 21        x2`= 27

n1=  10       n2= 14

s1= 5.6       s2= 4.3

The degrees of freedom is calculated using

υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

= 17

The t∝/2 for 17 d.f = 2.11

Putting the values

(x1`-x2`)- t∝/2 √s1²/n1 + s2²/n2 < u1-u2 < (x1`-x2`)+ t∝/2 √s1²/n1 + s2²/n2

(21-27) - 2.11√5.6²/10+ 4.3²/14 < u1-u2 <(21-27)  +2.11√5.6²/10+4.3²/14

6- 2.11*2.111 < u1-u2 <  ( 6 )  +2.11*2.111

6- 4.4521 < u1-u2 <  ( 6 )  +5.294

- 1.5479 < u1-u2 <  10.4521

The confidence Interval is [- 0.7053  10.4521]

a: The  hypotheses  are

H0: μ1=μ2    against the claim Ha :μ1≠μ2

The claim is that there is a difference in the average time spent by the two services

b. The critical value for t∝/2 for 17 d.f  t > 2.508 and  t < -2.111

The degrees of freedom is calculated using

υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

= 17

c. The test statistic is

t= (x1`-x2`)  /√s1²/n1 + s2²/n2

t= (21-27)  /√5.6²/10+ 4.3²/14

t= -6/2.111

t= -2.8422

d. The calculated value of t= -2.8422 is less than t < -2.11 the critical value therefore we reject H0 and conclude there is a difference between the two means.

5 0
3 years ago
The price of a video game was reduced from $60
Zigmanuir [339]
You take the orignal price of the video game and subtract the new price to see how much it was reduced. 60-45 = 15. then you take the reduced amount of the game (15) and divide by the original price (60). 
you get 25%
your answer is B
7 0
3 years ago
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kotegsom [21]

Answer:

The answers are A, B, C, F

3 0
3 years ago
Use the following function rule to find f(0).<br> f(x)= -9 (3)^x<br> f (0 ) =
AlladinOne [14]

Step-by-step explanation:

<u>Substitute f(0) into the function:</u>

f(0) =  - 9(3)^{0}

<u>Include exponent:</u>

f(0) =  - 9(1)

<u>Multiply:</u>

f(0) =  - 9

7 0
2 years ago
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